| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a KARAOKE device, to save the space, and to reduce the cost by compressing the KARAOKE background video data, recording them on a recording medium and transmitting the plural KARAOKE background video data read out from the recording medium in the division. SOLUTION: A background video data storage 25 in a transmitting station stores the KARAOKE background video data of a fixed length compressing the digital data at every plural category codes. Then, a transmission data generation device 26 divides the background video data at every category to n pieces of blocks, and time divides the background video data at every category by 1/n etch, and coverts them to a data stream capable of simultaneously transmitting the background video data of plural categories to send out it from a transmitter 27. At this time, a system controller 23 refers to the data totaling the number of request times at every category code stored in a request information storage 24, and instructs to the transmission data generation device 26 so as to transmit preferentially the background video data of the category with a high request frequency. |
